Panama has two boating seasons. The dry season, from about mid-December to April, brings steady northerly trade winds: strong breeze and chop in the Gulf of Panama and swell on the Caribbean coast. The rainy season, from May to November, brings lighter wind, afternoon squalls and lightning on both coasts. Panama lies south of the usual hurricane tracks, but tropical storms passing to the north can still bring dangerous rain.
Dry season: mid-December to April
The trade winds take over as the rains stop. Panama's weather institute (IMHPA) treats December as the transition month on the Pacific side, with rain days becoming less frequent; by January the dry season is set.
- Pacific. Northerlies funnel across the isthmus into the Gulf of Panama, often 15 to 25 knots. US offshore forecasts regularly show N to NE 20 to 25 knots in the open Gulf at night with 6 to 8 ft seas, while on the bay itself a short chop builds through the afternoon. Mornings are the calm window, and Punta Mala is windier than anywhere else.
- Caribbean. The north-east trades blow strongest and steadiest, building swell on the outer reefs of San Blas and the coast toward Colón. Cold-front surges from the north bring rain bursts even in the dry season. Excellent sailing, rolly open anchorages.
Rainy season: May to November
IMHPA describes the change as the near-total weakening of the trade winds and a shift to humid southerly winds, with rain arriving first in the Pacific west at the end of April. September and October are the wettest months.
- Pacific. Glassy mornings, heat building into thunderstorms after midday, with gusts, heavy rain and lightning; long southerly swell, which IMHPA sometimes forecasts at 2 m or more in the Gulf of Chiriquí and off Azuero.
- Caribbean. Light, variable wind, clearer water, and thunderstorms. No-see-ums come out when the wind drops.
Lightning is the real hazard on both coasts. Be in port or at anchor with the electronics protected by mid-afternoon, and keep a grab bag of handheld GPS and VHF in the oven or a metal box when a storm is overhead. A squall usually shows as a dark line building over the hills; reduce sail or speed early, and expect the wind to shift and gust well above the forecast for twenty minutes or so.
Why Panama has no hurricane season, and the exceptions
Atlantic hurricanes usually track well north of Panama, which is why cruisers base themselves here from June to November and why Panama marinas advertise themselves as hurricane-free. The record shows how rare a close pass is: in November 2016 Hurricane Otto formed about 105 nm north of Colón and came within about 75 nm of it before making landfall just north of the Costa Rica border, which the US National Hurricane Center lists as the southernmost hurricane landfall in Central America. The NHC report cites eight deaths in Panama from landslides, floods and a falling tree, and two sailors missing from a ship that sank off Colón.
The lesson: no hurricane season, but a storm passing to the north can still flood rivers and bring swell, especially in Bocas del Toro and on the Caribbean coast. Watch the NHC tropical outlooks from June to November.
El Niño and La Niña
IMHPA describes the El Niño–Southern Oscillation (ENSO) as having a major influence on Panama's climate. In 2023 IMHPA's director warned that El Niño would mean less rain than usual during the rainy season, which matters to the canal's water supply. In 2025 IMHPA attributed unusually heavy rain, even in the dry season, to La Niña. For boaters: an El Niño year can mean drier, calmer months and canal draft restrictions; a La Niña year, more squalls and debris in the water after heavy rain. Check IMHPA's quarterly outlook.
Best months by coast, and where to get forecasts
| Goal | Pacific | Caribbean |
|---|---|---|
| Calm water | May to November, mornings | May to November |
| Sailing breeze | January to March | December to April |
| Clear water, snorkelling | Dry season in Las Perlas | May to November |
| Whales | About July to October | — |
Forecast sources:
- IMHPA (Instituto de Meteorología e Hidrología de Panamá, imhpa.gob.pa), which took over from ETESA's hydrometeorology department in January 2023: daily forecasts, warnings and seasonal outlooks. SINAPROC issues the coastal swell alerts based on them.
- US National Hurricane Center offshore forecasts: zones AMZ061 (south-west Caribbean including the canal approaches) and PMZ117 (east Panama and Colombia, including the Gulf of Panama). Tropical outlooks from the same office.
- Windy, PredictWind and other model apps for wind and swell; compare them with the official text forecasts.
Your practical starting checklist
- Decide the season for the trip: dry for breeze, rainy for calm water.
- Read the IMHPA forecast and warnings for the day.
- Check the NHC offshore forecast for AMZ061 or PMZ117 before any passage.
- Plan to be in port or anchored by mid-afternoon in the rainy season.
- In the dry season, use morning calms for the Gulf of Panama and Punta Mala.
- From June to November, watch NHC tropical outlooks, especially on the Caribbean side.
Frequently asked questions
Does Panama have a hurricane season?
Not in the usual sense. Atlantic hurricanes track well to the north, but systems passing nearby, like Hurricane Otto in 2016, can bring deadly rain and swell. Watch the outlooks from June to November.
What is the best month to sail in Panama?
January to March for steady wind on both coasts. For calm water and easy anchoring, May to November, with afternoon thunderstorms.
When is the rainy season in Panama?
Roughly May to November, starting in the Pacific west at the end of April. September and October are usually the wettest months.
¿Cuál es la mejor época para navegar en Panamá?
De enero a marzo hay viento constante del norte, ideal para navegar a vela, pero con oleaje en el Caribe y mar picado en el Golfo de Panamá por la tarde. De mayo a noviembre el mar está más tranquilo, con tormentas eléctricas en la tarde.
¿Hay huracanes en Panamá?
Panamá está al sur de la trayectoria habitual de los huracanes, pero no es inmune: el huracán Otto pasó a unas 75 millas náuticas de Colón en 2016 y sus lluvias causaron muertes en el país. Consulte los avisos del IMHPA y del Centro Nacional de Huracanes de junio a noviembre.
The next question to answer
Trades, swell and reefs from Colón to Bocas. Read Cruising Panama's Caribbean coast.
Punta Mala windows and the long legs west. Read Cruising Panama's Pacific coast.
The morning bay and the afternoon bay. Read Bahía de Panamá boating guide.
Same topic in Florida: coming from the US? Compare Weather Assessment and Departure Decisions.
Official resources
Use the relevant Panamanian authority for current requirements and fees. These resources are the next place to check; a practical recommendation is not an agency determination.
- NOAA NHC: Tropical Cyclone Report, Hurricane Otto (AL162016) ↗
- NOAA NHC: Offshore waters forecast zones (AMZ061 SW Caribbean incl. canal approaches) ↗
- NOAA NHC: Offshore forecast PMZ117 Gulf of Panama, Jan 2024 sample ↗
- La Prensa: IMHPA created by Ley 209 of 2021, took over ETESA hydrometeorology in 2023 ↗
- TVN: IMHPA on the start of the rainy season and weakening trades ↗
- La Estrella: IMHPA outlook, La Niña rains and hurricane risk (May 2025) ↗